IPSEC_STRERROR(3) | Library Functions Manual | IPSEC_STRERROR(3)

# NAME

ipsec_strerror — error messages for the IPsec policy manipulation library

# LIBRARY

IPsec Policy Control Library (libipsec, -lipsec)

# SYNOPSIS

#include <netipsec/ipsec.h>

const char *
ipsec_strerror(void);

# DESCRIPTION

netinet6/ipsec.h declares

> `extern int ipsec_errcode;`

which is used to pass an error code from the IPsec policy manipulation library to a program. ipsec_strerror() can be used to obtain the error message string for the error code.

The array pointed to is not to be modified by the calling program. Since ipsec_strerror() uses strerror(3) as underlying function, calling strerror(3) after ipsec_strerror() will make the return value from ipsec_strerror() invalid or overwritten.

# RETURN VALUES

ipsec_strerror() always returns a pointer to a C string. The C string must not be overwritten by the calling program.

# SEE ALSO

ipsec_set_policy(3)

# HISTORY

ipsec_strerror() first appeared in the WIDE/KAME IPv6 protocol stack kit.

# BUGS

ipsec_strerror() will return its result which may be overwritten by subsequent calls.

ipsec_errcode is not thread safe.

January 4, 2012 | NetBSD 7.2